Animal house having ammonia control apparatus

Abstract

An animal house has ammonia control apparatus. The animal house is a building structured for housing one or more animals. Apparatus is positioned inside the animal house for removing ammonia from air, and then returning the air inside the animal house. A method for removing ammonia from air in an animal house includes removing ammonia from air with an apparatus positioned inside the animal house, and then returning the air with ammonia removed inside the animal house.

What is claimed is: 
     
       1. An animal house having ammonia control apparatus comprising:
 an animal house which is a building structured for housing one or more animals; and 
 apparatus positioned inside the animal house for removing ammonia from air, and then returning the air inside the animal house. 
 
     
     
       2. The animal house of  claim 1 , wherein the ammonia removal includes producing an ammonium product. 
     
     
       3. The animal house of  claim 1 , wherein the ammonia removal includes contacting the air with an acid, reacting the acid with the ammonia, and producing an ammonium salt. 
     
     
       4. The animal house of  claim 3 , wherein the apparatus includes a device or material for separating the ammonium salt from the acid. 
     
     
       5. The animal house of  claim 3 , wherein the apparatus includes a structure for recovering the ammonium salt in solution with the acid. 
     
     
       6. The animal house of  claim 1 , wherein the apparatus includes a device for increasing flow of air through the apparatus. 
     
     
       7. The animal house of  claim 1 , wherein the apparatus includes a structure for increasing surface area of the acid contacting the air. 
     
     
       8. The animal house of  claim 1 , wherein the acid is in the form of an aqueous acid solution, and wherein the apparatus includes a water supply for replenishing water evaporated from the solution. 
     
     
       9. The animal house of  claim 7 , wherein the acid solution is a sulfuric acid solution, and wherein the ammonium product is ammonium sulfate. 
     
     
       10. The animal house of  claim 1 , wherein the apparatus is effective to control ammonia in the air to a level not greater than 25 ppm. 
     
     
       11. The animal house of  claim 9 , wherein the apparatus includes storage of the recovered ammonium sulfate. 
     
     
       12. The animal house of  claim 1 , wherein the apparatus includes a reactor for reacting the acid with the ammonia. 
     
     
       13. The animal house of  claim 1 , wherein the apparatus includes a storage container of the acid outside the reactor. 
     
     
       14. The animal house of  claim 1 , wherein the animal house includes multiple apparatuses for removing ammonia positioned inside the animal house. 
     
     
       15. A method for removing ammonia from air in an animal house, the method comprising:
 removing ammonia from air with an apparatus positioned inside the animal house; and then 
 returning the air with ammonia removed inside the animal house. 
 
     
     
       16. The method of  claim 15 , wherein the ammonia removal includes producing an ammonium product. 
     
     
       17. The method of  claim 16 , wherein the ammonia removal includes contacting the air with an acid solution, reacting the acid solution with the ammonia, and producing an ammonium salt. 
     
     
       18. The method of  claim 17 , which further includes increasing surface area of the acid solution which contacts the air. 
     
     
       19. The method of  claim 17 , which further includes recovering a solution of the ammonium salt in the acid solution after the reaction. 
     
     
       20. The method of  claim 15 , wherein ammonia in the air is controlled to a level not greater than 25 ppm.